US STOCKS-Futures edge higher with tech shares in focus
* Priceline and Hewlett-Packard both top expectations
* Groupon tumbles in premarket after forecasting loss
* Existing home sales data on tap, seen down 4.3 pct
* Futures up: Dow 22 pts, S&P 2.8 pts, Nasdaq 6.75
By Ryan Vlastelica
NEW YORK, Feb 21 (Reuters) - U.S. stock index futures pointed to a higher open on Friday, indicating that a rally that lifted the S&P 500 close to record levels in the previous session could continue following some strong results from technology companies.
* Market participants are looking ahead to data on January existing home sales, due at 10:00 a.m. EST (1500 GMT), which will give the latest glimpse into how the economy is faring as the U.S. Federal Reserve dials back its stimulus. Sales are seen falling 4.3 percent.
* Recent economic data has been mixed, with many metrics - including housing starts on Wednesday - indicating softness, though analysts have largely shrugged that off, pinning the weakness to frigid weather rather than softening fundamentals. Thursday's rally was partially fueled by a bullish read on factory activity, which seemed to support that view.
* Tech shares will be in focus a day after both Hewlett Packard Co and Priceline.com Inc reported results that topped expectations. Computer maker HP also raised its 2014 profit view, sending shares up 0.7 percent to $30.40 in premarket trading. Priceline rose 2.6 percent to $1,315.93. Continuación...